./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:07:31,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:07:31,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:07:31,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:07:31,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:07:31,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:07:31,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:07:31,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:07:31,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:07:31,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:07:31,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:07:31,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:07:31,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:07:31,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:07:31,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:07:31,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:07:31,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:07:31,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:07:31,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:07:31,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:07:31,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:07:31,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:07:31,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:07:31,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:07:31,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:07:31,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:07:31,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:07:31,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:07:31,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:07:31,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:07:31,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:07:31,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:07:31,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:07:31,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:07:31,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:07:31,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:07:31,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:07:31,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:07:31,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:07:31,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:07:31,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:07:31,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 12:07:31,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:07:31,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:07:31,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:07:31,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:07:31,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:07:31,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:07:31,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:07:31,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:07:31,714 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:07:31,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:07:31,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:07:31,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:07:31,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:07:31,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:07:31,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:07:31,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:07:31,739 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:07:31,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:07:31,740 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:07:31,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:07:31,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:07:31,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:07:31,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:07:31,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:31,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:07:31,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:07:31,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:07:31,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:07:31,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:07:31,743 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:07:31,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:07:31,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:07:31,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 [2022-11-20 12:07:32,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:07:32,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:07:32,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:07:32,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:07:32,048 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:07:32,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2022-11-20 12:07:35,366 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:07:35,799 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:07:35,800 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2022-11-20 12:07:35,829 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data/4983ca5d4/5bf3382e1f3e4b0bad9c61687fbab481/FLAGaee53a698 [2022-11-20 12:07:35,855 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data/4983ca5d4/5bf3382e1f3e4b0bad9c61687fbab481 [2022-11-20 12:07:35,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:07:35,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:07:35,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:35,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:07:35,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:07:35,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:35" (1/1) ... [2022-11-20 12:07:35,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7068e4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:35, skipping insertion in model container [2022-11-20 12:07:35,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:35" (1/1) ... [2022-11-20 12:07:35,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:07:35,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:07:36,470 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:07:37,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:37,108 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:07:37,137 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:07:37,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:37,447 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:07:37,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37 WrapperNode [2022-11-20 12:07:37,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:37,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:37,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:07:37,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:07:37,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,532 INFO L138 Inliner]: procedures = 501, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2022-11-20 12:07:37,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:37,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:07:37,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:07:37,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:07:37,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:07:37,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:07:37,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:07:37,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:07:37,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (1/1) ... [2022-11-20 12:07:37,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:37,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:37,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:07:37,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-20 12:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-20 12:07:37,662 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-20 12:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:07:37,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:07:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:07:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-20 12:07:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:07:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:07:37,911 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:07:37,913 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:07:38,114 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:07:38,121 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:07:38,122 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:07:38,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:38 BoogieIcfgContainer [2022-11-20 12:07:38,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:07:38,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:07:38,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:07:38,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:07:38,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:07:35" (1/3) ... [2022-11-20 12:07:38,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e751762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:38, skipping insertion in model container [2022-11-20 12:07:38,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:37" (2/3) ... [2022-11-20 12:07:38,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e751762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:38, skipping insertion in model container [2022-11-20 12:07:38,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:38" (3/3) ... [2022-11-20 12:07:38,137 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2022-11-20 12:07:38,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:07:38,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:07:38,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:07:38,254 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@cde464a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:07:38,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:07:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:07:38,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:07:38,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:38,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:38,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:07:38,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-20 12:07:38,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:38,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126065137] [2022-11-20 12:07:38,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:38,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:07:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:07:38,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:38,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126065137] [2022-11-20 12:07:38,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126065137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:38,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:38,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:07:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85326616] [2022-11-20 12:07:38,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:38,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:07:38,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:39,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:07:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:07:39,030 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:07:39,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:39,100 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-20 12:07:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:07:39,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 12:07:39,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:39,113 INFO L225 Difference]: With dead ends: 23 [2022-11-20 12:07:39,114 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 12:07:39,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:07:39,122 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:39,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:07:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 12:07:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 12:07:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:07:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-20 12:07:39,171 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2022-11-20 12:07:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-20 12:07:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:07:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-20 12:07:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:07:39,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:39,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:39,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:07:39,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:07:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2022-11-20 12:07:39,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:39,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854354286] [2022-11-20 12:07:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:39,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:07:39,220 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:07:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:07:39,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:07:39,268 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:07:39,270 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-20 12:07:39,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-20 12:07:39,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:07:39,278 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:07:39,282 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:07:39,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:07:39 BoogieIcfgContainer [2022-11-20 12:07:39,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:07:39,313 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:07:39,313 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:07:39,314 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:07:39,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:38" (3/4) ... [2022-11-20 12:07:39,317 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:07:39,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:07:39,319 INFO L158 Benchmark]: Toolchain (without parser) took 3453.77ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 112.7MB in the beginning and 116.6MB in the end (delta: -3.9MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. [2022-11-20 12:07:39,319 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory was 123.8MB in the beginning and 123.6MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:07:39,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1578.32ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 112.2MB in the beginning and 193.1MB in the end (delta: -80.9MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. [2022-11-20 12:07:39,320 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.43ms. Allocated memory is still 230.7MB. Free memory was 193.1MB in the beginning and 190.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:07:39,321 INFO L158 Benchmark]: Boogie Preprocessor took 29.31ms. Allocated memory is still 230.7MB. Free memory was 190.0MB in the beginning and 187.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:39,321 INFO L158 Benchmark]: RCFGBuilder took 560.97ms. Allocated memory is still 230.7MB. Free memory was 187.9MB in the beginning and 174.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:07:39,322 INFO L158 Benchmark]: TraceAbstraction took 1184.51ms. Allocated memory is still 230.7MB. Free memory was 173.2MB in the beginning and 116.6MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-20 12:07:39,322 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 230.7MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:07:39,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory was 123.8MB in the beginning and 123.6MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1578.32ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 112.2MB in the beginning and 193.1MB in the end (delta: -80.9MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.43ms. Allocated memory is still 230.7MB. Free memory was 193.1MB in the beginning and 190.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.31ms. Allocated memory is still 230.7MB. Free memory was 190.0MB in the beginning and 187.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 560.97ms. Allocated memory is still 230.7MB. Free memory was 187.9MB in the beginning and 174.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1184.51ms. Allocated memory is still 230.7MB. Free memory was 173.2MB in the beginning and 116.6MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 230.7MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741826:1073741832}, argv={1073741826:1073741832}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1580] --data VAL [data=-2147483648, dataArray={6:0}, dataArray={6:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 21 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 12:07:39,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:07:42,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:07:42,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:07:42,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:07:42,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:07:42,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:07:42,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:07:42,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:07:42,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:07:42,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:07:42,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:07:42,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:07:42,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:07:42,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:07:42,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:07:42,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:07:42,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:07:42,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:07:42,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:07:42,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:07:42,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:07:42,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:07:42,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:07:42,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:07:42,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:07:42,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:07:42,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:07:42,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:07:42,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:07:42,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:07:42,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:07:42,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:07:42,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:07:42,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:07:42,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:07:42,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:07:42,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:07:42,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:07:42,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:07:42,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:07:42,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:07:42,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-20 12:07:42,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:07:42,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:07:42,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:07:42,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:07:42,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:07:42,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:07:42,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:07:42,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:07:42,528 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:07:42,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:07:42,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:07:42,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:07:42,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:07:42,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:07:42,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:07:42,530 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:07:42,531 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:07:42,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:07:42,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:07:42,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:07:42,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:07:42,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:07:42,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:07:42,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:42,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:07:42,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:07:42,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:07:42,534 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:07:42,534 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:07:42,535 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:07:42,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:07:42,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:07:42,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:07:42,536 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 [2022-11-20 12:07:43,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:07:43,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:07:43,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:07:43,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:07:43,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:07:43,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2022-11-20 12:07:46,476 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:07:46,899 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:07:46,900 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2022-11-20 12:07:46,924 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data/fee9565da/aa850af7a73f4ce5802bf1ee6c5c274f/FLAG879dbc9a4 [2022-11-20 12:07:46,953 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/data/fee9565da/aa850af7a73f4ce5802bf1ee6c5c274f [2022-11-20 12:07:46,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:07:46,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:07:46,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:46,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:07:46,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:07:46,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:46" (1/1) ... [2022-11-20 12:07:46,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbe5c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:46, skipping insertion in model container [2022-11-20 12:07:46,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:07:46" (1/1) ... [2022-11-20 12:07:46,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:07:47,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:07:47,564 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:07:48,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:48,426 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:07:48,470 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:07:48,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:07:48,734 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:07:48,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48 WrapperNode [2022-11-20 12:07:48,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:07:48,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:48,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:07:48,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:07:48,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,816 INFO L138 Inliner]: procedures = 506, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-11-20 12:07:48,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:07:48,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:07:48,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:07:48,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:07:48,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:07:48,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:07:48,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:07:48,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:07:48,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (1/1) ... [2022-11-20 12:07:48,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:07:48,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:07:48,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:07:48,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:07:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-20 12:07:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-20 12:07:48,970 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-20 12:07:48,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:07:48,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:07:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:07:48,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:07:48,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:07:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:07:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:07:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:07:48,976 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-20 12:07:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:07:49,175 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:07:49,178 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:07:49,481 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:07:49,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:07:49,502 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:07:49,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:49 BoogieIcfgContainer [2022-11-20 12:07:49,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:07:49,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:07:49,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:07:49,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:07:49,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:07:46" (1/3) ... [2022-11-20 12:07:49,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:49, skipping insertion in model container [2022-11-20 12:07:49,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:07:48" (2/3) ... [2022-11-20 12:07:49,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:07:49, skipping insertion in model container [2022-11-20 12:07:49,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:49" (3/3) ... [2022-11-20 12:07:49,523 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2022-11-20 12:07:49,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:07:49,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 0 error locations. [2022-11-20 12:07:49,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:07:49, skipping insertion in model container [2022-11-20 12:07:49,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:07:49,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:07:49,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:07:49,552 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:07:49,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:07:49" (3/3) ... [2022-11-20 12:07:49,557 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:07:49,565 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2022-11-20 12:07:49,576 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-20 12:07:49,576 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 12:07:49,577 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:07:49,577 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:07:49,646 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:07:49,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:07:49,650 INFO L158 Benchmark]: Toolchain (without parser) took 2688.05ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 38.2MB in the beginning and 54.7MB in the end (delta: -16.6MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:49,650 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:07:49,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1772.22ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 38.0MB in the beginning and 49.7MB in the end (delta: -11.8MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2022-11-20 12:07:49,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.19ms. Allocated memory is still 100.7MB. Free memory was 49.7MB in the beginning and 47.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:49,652 INFO L158 Benchmark]: Boogie Preprocessor took 38.01ms. Allocated memory is still 100.7MB. Free memory was 46.5MB in the beginning and 44.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:49,653 INFO L158 Benchmark]: RCFGBuilder took 648.36ms. Allocated memory is still 100.7MB. Free memory was 44.6MB in the beginning and 60.5MB in the end (delta: -15.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-11-20 12:07:49,653 INFO L158 Benchmark]: TraceAbstraction took 43.21ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 57.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:49,654 INFO L158 Benchmark]: Witness Printer took 96.30ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 54.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:07:49,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1772.22ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 38.0MB in the beginning and 49.7MB in the end (delta: -11.8MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.19ms. Allocated memory is still 100.7MB. Free memory was 49.7MB in the beginning and 47.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.01ms. Allocated memory is still 100.7MB. Free memory was 46.5MB in the beginning and 44.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 648.36ms. Allocated memory is still 100.7MB. Free memory was 44.6MB in the beginning and 60.5MB in the end (delta: -15.9MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 43.21ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 57.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 96.30ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 54.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specification because the program does not contain any specification. RESULT: Ultimate proved your program to be correct! [2022-11-20 12:07:49,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f48a2c6-2c3d-43db-a5a4-d1704e732f1c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE